{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACM2012-121-2P-TL002","brand":"TDK Corporation","brandSlug":"tdk-corporation","productSlug":"ACM2012-121-2P-TL002","canonicalUrl":"https://icboms.com/tdk-corporation/ACM2012-121-2P-TL002","factsUrl":"https://icboms.com/api/mcp/products/ACM2012-121-2P-TL002","rawCanonicalId":null},"summary":{"shortDescription":"TDK Corporation ACM series common mode filter, 0805 (2012 Metric) package, 2-line, 120 Ohms @ 100 MHz, 370 mA, 50 VDC, Tape & Reel.","salesMarkdown":"## What 120 ohms at 100 MHz means on a signal line The ACM2012-121-2P-TL002 is a 2-line common mode filter from TDK's ACM series, packaged in an 0805 footprint with a 4-pad layout for differential signal pairs. Its core spec is 120 ohms impedance at 100 MHz — this is the common-mode attenuation point for noise on USB, HDMI, LVDS, or CAN bus lines where the differential signal itself passes through unaffected while common-mode noise above that frequency is shunted. Rated for 370 mA continuous current with a maximum DC resistance of 220 milliohms, the insertion loss on the signal stays under 0.1 dB at low frequencies — the DCR is the thermal limit, not the magnetic saturation point, so the filter handles the full current rating without impedance roll-off. ## 0805 footprint and board integration The 50 VDC rating covers signal-line isolation for most low-voltage differential interfaces. Surface-mount assembly with Tape & Reel packaging supports standard pick-and-place throughput. ## Obsolete — sourcing reality for this TDK filter TDK has marked the ACM2012-121-2P-TL002 as obsolete. No official successor order code is recorded in the lifecycle data, meaning a direct drop-in replacement from TDK's current catalog is not documented — the buyer's best path is independent distribution inventory or a parametric search for a 2-line 0805 common-mode filter with matching impedance and current rating. No pin-compatible second-source is listed on the official record, so a board-level qualification is advised if substituting from another manufacturer's 0805 common-mode choke family.","metaTitle":"TDK ACM2012-121-2P-TL002 0805 Common Mode Filter, 120 Ohms","metaDescription":"TDK ACM2012-121-2P-TL002 2-line common mode filter, 120 ohms @ 100 MHz, 370 mA, 0805. Obsolete — sourced to order via independent distribution.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["EMI Filters & Ferrite Beads"],"specifications":{"Mfr":"TDK Corporation","Series":"ACM","Package":"Tape & Reel (TR)","Ratings":"-","Features":"-","Filter Type":"Signal Line","Height (Max)":"0.051\\\" (1.30mm)","Mounting Type":"Surface Mount","Package / Case":"0805 (2012 Metric), 4 PC Pad","Product Status":"Obsolete","Approval Agency":"-","Number of Lines":"2","lifecycle_stage":"unknown","Size / Dimension":"0.079\\\" L x 0.047\\\" W (2.00mm x 1.20mm)","Voltage Rating - AC":"-","Voltage Rating - DC":"50V","Current Rating (Max)":"370mA","Impedance @ Frequency":"120 Ohms @ 100 MHz","Operating Temperature":"-40°C ~ 85°C","DC Resistance (DCR) (Max)":"220mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a359cecc9cbf25f118a2d8beb6500477.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ACM2012-121-2P-TL002/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation is available for ACM2012-121-2P-TL002?","answer":"As a TDK catalog part, standard RoHS and REACH compliance declarations are available from the manufacturer. No UL or IEC certification is listed in the product record for this specific order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/tdk-corporation/ACM2012-121-2P-TL002","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/tdk-corporation/ACM2012-121-2P-TL002 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}